Remove Pressure Regulator Transmitter for In Shop Functional Check

TASK 35-13-00-200-802-A
Remove Pressure Regulator Transmitter for In Shop Functional Check

WARNING: KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.

WARNING: CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.

ZONE: 125

1. Reason for the Job
Refer to the MPD TASK: 351000-10
REMOVE PRESSURE REGULATOR TRANSMITTER FOR IN SHOP FUNCTIONAL CHECK

2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
125	LATERAL AVIONIC COMPARTMENT

B. Referenced Information

REFERENCE	DESIGNATION
TASK 35-13-15-000-001-A	Removal of the Oxygen Pressure Regulator/Transmitter
TASK 35-13-15-000-802-A	Removal of the Oxygen Pressure Regulator/Transmitters
TASK 35-13-15-400-001-A	Installation of the Oxygen Pressure Regulator/Transmitter
TASK 35-13-15-400-802-A	Installation of the Oxygen Pressure Regulator/Transmitters

3. Job Set-up
Subtask 35-13-00-020-051-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the oxygen pressure regulator/transmitter (4HT) (Ref. AMM TASK 35-13-15-000-001).

Subtask 35-13-00-020-051-B ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the oxygen pressure regulator/transmitters (4HT) and (4HT2) (Ref. AMM TASK 35-13-15-000-802).

4. Procedure
Subtask 35-13-00-200-051-A ** ON A/C NOT FOR ALL

A. Functional Check
(1) Send the oxygen pressure regulator/transmitter (4HT) to the workshop for:

A functional check to find leaks
A functional check for correct pressure regulation
A functional check of its pressure sensor.

Subtask 35-13-00-200-051-B ** ON A/C NOT FOR ALL

A. Functional Check
(1) Send the oxygen pressure regulator/transmitters (4HT) and (4HT2) to the workshop for:

A functional check to find leaks
A functional check for correct pressure regulation
A functional check of its pressure sensor.

5. Close-up
Subtask 35-13-00-420-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the serviceable oxygen-pressure regulator/transmitter (4HT) (Ref. AMM TASK 35-13-15-400-001).

Subtask 35-13-00-420-051-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the serviceable oxygen-pressure regulator/transmitters (4HT) and (4HT2) (Ref. AMM TASK 35-13-15-400-802).

[Rev.10 from 2021] 2026.04.01 01:04:26 UTC